Article 2 of the United Nations Charter stipulates that UN members settle international disputes by peaceful means and refrain from the threat or use of force. This commitment represents the most important agreement humankind has constructed in international relations after World War II. In defiance of this agreement, Russia invaded Ukraine in February 2022. This article first discusses similar historical cases and notes that it is necessary for international society to stay prepared for similar crises. On the premise that such emergencies will continue to recur, the author presents eight lessons that should be learned by the international community from the Russian invasion of Ukraine.

《联合国宪章》第二条规定，联合国会员国以和平方式解决国际争端，不以武力相威胁或使用武力。这一承诺是二战后人类在国际关系中达成的最重要的协议。俄罗斯无视该协议，于2022年2月入侵乌克兰。本文首先讨论了类似的历史案例，并指出国际社会有必要为类似的危机做好准备。在此类紧急情况将继续发生的前提下，作者提出了国际社会应从俄罗斯入侵乌克兰中吸取的八个教训。